MALICIOUS
116
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document contains a link farm pointing to multiple PDF files hosted on compromised WordPress sites, suggesting an attempt to distribute malicious content or phish users. The 'SE_CALLBACK_LURE' heuristic indicates the document's content is designed to trick users into calling a phone number, a common tactic in tech-support scams or callback phishing operations. No scripts were extracted, but the ML classifier strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
Heuristics 6
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/160b878f10b92a---gobado.pdf In PDF document text
- https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/rp2jdb7717hdn1ok0afkk9nf3c/xezafefabizarupi.pdfIn PDF document text
- https://neplatnasmlouva.cz/soubory/bojef.pdfIn PDF document text
- http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607e0cdcce785---83986839825.pdfIn PDF document text
- https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/8971ce96a58b4f52a6b0d0f0685b610b/kidojogiravuniwuwiwot.pdfIn PDF document text
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/8ba8de61d533f3bff8f145d21dbe77cd/65087917595.pdfIn PDF document text
- http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a587eba9597---87247234993.pdfIn PDF document text
- https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/8ba2a235879c1f32530b5cbf13e68066/5467481294.pdfIn PDF document text
- https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/6bc3a01cf13e96e9466f006376619a77/56288852953.pdfIn PDF document text
- https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/9b0876b4f35f449cd2f6cd57a8596c61/digefepopalefedumo.pdfIn PDF document text
- http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fb5f9d71ca---lekepozogabonasenetetuxok.pdfIn PDF document text
- http://esoftland.com/userfiles/file/28090222572.pdfIn PDF document text
- https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161028a9bb0850---zutuvijemumidagepudar.pdfIn PDF document text
- https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/16091026b90a54---81731779536.pdfIn PDF document text
- http://rhondadejean.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/lujuwugujikiwitizifipokiz.pdfIn PDF document text
- https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/l9j975gbfsgt27grntbj1dge0b/runazejiwuri.pdfIn PDF document text
- http://chinalabware.net/d/files/kozejaderopawuniwat.pdfIn PDF document text
- https://prtl.pl/userfiles/file/luvamokimabenag.pdfIn PDF document text
- https://ph2020.org/FCKeditor/file/61612105979.pdfIn PDF document text
- https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/13374615fd94c245d80922ae3b8ed962/98726804896.pdfIn PDF document text
- http://lica-mpt.it/userfiles/files/bopawuliwunosanusanek.pdfIn PDF document text
- https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160855b7d046be---sepeweligaxud.pdfIn PDF document text
- https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608df95f4a58a---fokafekeg.pdfIn PDF document text
- http://iamsong.vn/uploads/files/tipomigorosab.pdfIn PDF document text
- https://spotiverify.com/ci/userfiles/files/mugabonebufog.pdfIn PDF document text
- http://szolnokepul.hu/userfiles/file/8170561612.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=best+wireless+earbuds+2019+under+10000PDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000100df.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100DF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off000118f6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x118F6 | 10960 bytes |
SHA-256: 5f0b98e212c2dbef3e51e3a2094f199bf028705cc562bcad919b531067a9a576 |
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font_02_sfnt_off000132a6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x132A6 | 18156 bytes |
SHA-256: cc0be31560cf8375a576b5ed67f549470cebe8339c2bd9a9cd1c42b6a5446da9 |
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